Ready to give Sprint a shot? Sprint new customer deals and promotions for new and existing customers change often, but usually include: free trials, rebate offers, and opportunities to pre-register for the latest Sprint phones, including the new Samsung Galaxy. Trade in your old phone for an account credit up to $300. While the “Framily Plan” is a good way to get your nearest and dearest into a mutually inexpensive talk-and-text plan for as little as $25 a month (per line).